Helm is a package manager for Kubernetes that helps manage Kubernetes applications. Helm charts are the packages that contain all the necessary resources to deploy an application to a Kubernetes cluster. A chart is a collection of files that describe a related set of Kubernetes resources, such as YAML configuration files for deployments, services, secrets, and config maps that define the desired state of your application. Helm charts can be versioned and managed independently, making it easy to maintain multiple versions of an application with different configurations.

Helm charts can be used to deploy even the most complex Kubernetes applications. They are easy to create, version, share, and publish. Charts provide repeatable application installation and serve as a single point of authority, making it easy to manage complexity. Helm also provides easy updates with in-place upgrades and custom hooks, and simple sharing of charts that can be hosted on public or private servers.

Helm has a client that is a command-line utility for end-users to control local chart development and manage repositories and releases. The Helm repository is where you can upload Helm charts, and you can also create a private repository to share charts within your organization. Artifact Hub is a global Helm repository that features searchable charts that you can install for numerous purposes.

In summary, Helm charts are a way to package Kubernetes resources and deploy them to a Kubernetes cluster. They provide a way to manage complexity, versioning, and sharing of Kubernetes applications.